/* https://grabient.com/_gJDgH1gIagIjgL4gJtgDZgFrgDFgAAgguhBdgFpXwydD?style=linearGradient&steps=7&angle=135 */

background: linear-gradient(135deg, #b4e1e9 0.000%, #c6f3e7 16.667%, #d5f2e0 33.333%, #e0dfd5 50.000%, #e7bcc6 66.667%, #e890b5 83.333%, #e561a1 100.000%);

<svg xmlns="http://www.w3.org/2000/svg" width="800" height="400" viewBox="0 0 800 400" preserveAspectRatio="none">
            <!-- https://grabient.com/_gJDgH1gIagIjgL4gJtgDZgFrgDFgAAgguhBdgFpXwydD?style=linearGradient&steps=7&angle=135 -->
            <defs>
              <linearGradient id="gradient" x1="0.146" y1="0.146" x2="0.854" y2="0.854">
        <stop offset="0.000" stop-color="#b4e1e9" /><stop offset="0.167" stop-color="#c6f3e7" /><stop offset="0.333" stop-color="#d5f2e0" /><stop offset="0.500" stop-color="#e0dfd5" /><stop offset="0.667" stop-color="#e7bcc6" /><stop offset="0.833" stop-color="#e890b5" /><stop offset="1.000" stop-color="#e561a1" />
              </linearGradient>
            </defs>
            <rect x="0" y="0" width="800" height="400" fill="url(#gradient)" />
          </svg>

["#b4e1e9", "#c6f3e7", "#d5f2e0", "#e0dfd5", "#e7bcc6", "#e890b5", "#e561a1"]

// https://grabient.com/_gJDgH1gIagIjgL4gJtgDZgFrgDFgAAgguhBdgFpXwydD?style=linearGradient&steps=7&angle=135
// cosine gradient palette — https://iquilezles.org/articles/palettes/
const float STEPS = 7.0;
const float ANGLE = 135.0;

vec3 palette(float t) {
    vec3 a = vec3(0.584, 0.506, 0.543);
    vec3 b = vec3(0.328, 0.455, 0.372);
    vec3 c = vec3(0.233, 0.390, 0.212);
    vec3 d = vec3(-0.189, 1.905, 4.000);
    return a + b * cos(6.283185 * (c * t + d));
}

// N stops sampled from the palette, blended like the CSS gradient
vec3 stops(float t) {
    float n = STEPS - 1.0;
    float x = clamp(t, 0.0, 1.0) * n;
    return mix(palette(floor(x) / n), palette(min(floor(x) + 1.0, n) / n), fract(x));
}

void mainImage(out vec4 fragColor, in vec2 fragCoord) {
    vec2 p = fragCoord - 0.5 * iResolution.xy;
    // CSS angle: 0 = up, clockwise; span = CSS gradient-line length
    vec2 dir = vec2(sin(radians(ANGLE)), cos(radians(ANGLE)));
    float len = abs(iResolution.x * dir.x) + abs(iResolution.y * dir.y);
    float t = dot(p, dir) / len + 0.5;
    fragColor = vec4(stops(t), 1.0);
}

[
  [0.584, 0.506, 0.543],
  [0.328, 0.455, 0.372],
  [0.233, 0.390, 0.212],
  [-0.189, 1.905, 4.000]
]

Gradient palette editor — #b4e1e9 to #e561a1